Your machines are the most watchable thing you own
Most small print shops undersell the part customers find most interesting. People who order twenty team shirts or a banner for their shop have rarely seen a heat press open or a wide-format printer run, and a few seconds of either is oddly satisfying to watch. It also answers a question buyers rarely ask out loud: do you print this yourselves, or send it somewhere else?
That is why both examples here start with the machine. The T-shirt ad opens on the press lifting to reveal the print; the banner ad opens on the print head running across vinyl. A shop interior with nothing running could be any shop. A press opening is unmistakably a print shop, and it is the moment the order becomes real.